3 ms·
If a car with 1500-mile range will become a reality with any chemistry, it will not appear first. These (fantastic) batteries with 4-5x the energy density of mo
by anovikov 8y ago
If a car with 1500-mile range will become a reality with any chemistry, it will not appear first. These (fantastic) batteries with 4-5x the energy density of modern li-ion, will go into a much more profitable use: electric airplanes.
Not sure if these ever appear though. This seems to push not just the limits of technology, but even the laws of physics.
- DennisP 8y agoGoogling "fluoride battery" brings up a bunch of articles claiming up to 10X better energy density than lithium. Until recently fluoride batteries had to be kept at high temperature but a recent development by Honda/NASA/Caltech changed that [1] [2]. However, "the team still has to figure out how to stabilize the anodes and cathodes, which tend to dissolve completely into the electrolyte. They're making some headway though, and further testing is currently underway." In any case, I'm not really making any particular claims about battery tech, just saying I see a flaw in the article's argument that lithium is unassailable. I agree that airplanes are a likely early application of radically better batteries. [1] https://www.engadget.com/2018/12/07/fluoride-battery-breakthrough-evs/ https://www.engadget.com/2018/12/07/fluoride-battery-breakth... [2] https://www.batterypoweronline.com/news/what-the-fluoride-ion-battery-breakthrough-really-means/ https://www.batterypoweronline.com/news/what-the-fluoride-io...
- pdxww 8y agoAn airplane usually spends 1-2 hours in the airport between flights. During that period it needs to be recharged.
- stubish 8y agoOr the battery needs to be swapped out with one that was charged while it was in the air.